Damage Control in the Oil and Gas Industry

1 Oil tank reconstruction. Oil recovered in the field is characterized by a high content of water in which salts, acids, and hydrogen sulfide are dissolved such oil results in metal corrosion. The service life of corrosion-resistant coatings in use does not exceed 2 years when the oil contains large amounts of hydrogen sulfide. 

The properties of Sprut-12 and Sprut-14 polymeric compositions developed for tank repair allow these labor-intensive operations to be avoided. The compositions can be applied onto the metal surface without thorough cleaning off of oil products, water, and metal corro- 

The most secure corrosion-resistant protection of the metal is observed with use of basalt flakes. These flakes of 2 mm length and 1—2 mm diameter are laid parallel to the metal siuface with the application of the coating and form a durable corrosion-preventive barrier of cold ceramics type. There are 200—300 flake layers in a typical coating layer. 

2 Repair of pipelines. Problems emerging diuing pipeline operation include failure of rust-preventing coatings on the internal and external parts of a pipe, decrease in pipe strength due to corrosion failure, appearance of flute cracks in the pipe body, and diffusion of gas through leaks in welds. 

Corrosion Inhibition of internal surface of pipelines. Corrosion of internal surfaces is observed, primarily in pipelines used in crude oil production, where the oil contains a great amount of water. An interesting feature, so-called stream corrosion, characterizes the corrosive damage to pipes when water and solid suspended matter make grooves in the bottom of a pipe. 

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